Tell me about a product you shipped that you are proud of.
Whether you can communicate scope at the right altitude, whether you understand why the work mattered, and whether you can take credit cleanly without over-claiming the team's work.
Pick a project where you made a meaningful decision, not just executed someone else's plan. Open with the problem and the constraint that made it interesting. Describe one or two alternatives you considered and why you ruled them out. Cover what shipped, the metric that moved, and what you learned. Keep it under three minutes; interviewers will ask for more if they want it.